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本文根据沼泽剖面的 ~(14)C测年、孢粉分析、粘土矿物X-衍射分析、植物残体鉴定和沉积物化学元素资料,研究了晚更新世末期以来三江平原沼泽发育与古地理环境演变。结果表明,沼泽发生及其发展与古地理环境演变有极其密切的关系。可分为四个时期:晚更新世末期沼泽孕育期,早全新世沼泽萌芽发育期,中全新世沼泽旺盛发育期,晚全新世沼泽继续扩大发育期。距今11000年左右应为本区晚更新世与全新世的分界。腐泥层底是全新统的下界。同江县勤得利农场十九队、抚远县创业队沼泽剖面可作为本区全新世的标准剖面。泥炭积累速率为晚全新世>早全新世>中全新世。
Based on the ~ (14) C dating, sporopollen analysis, X-ray analysis of clay minerals, identification of plant residues and sediment chemical elements in the marsh section, the paper studied the relationship between swamp development and palaeogeomorphology in the Sanjiang Plain since the late Pleistocene Evolution. The results show that the marsh occurrence and its development are closely related to the paleogeographic environment evolution. It can be divided into four periods: the end of the late Pleistocene marsh incubation period, early Holocene swamp germination period, the Mid-Holocene swamp booming period, Late Holocene marsh continue to expand the developmental period. About 11000 years ago, this area should be the boundary between Late Pleistocene and Holocene. The bottom of the sapropelite is the Holocene lower bound. Nineteen teams of Qin Deli Farm, Tongyuan County, Fuyuan County venture team swamp section can be used as a standard section of the Holocene. The peat accumulation rate is Late Holocene> Early Holocene> Middle Holocene.